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public abstract class Number extends Object implements Serializable
The abstract class Number
is the superclass of classes
BigDecimal
, BigInteger
,
Byte
, Double
, Float
,
Integer
, Long
, and Short
.
Subclasses of Number
must provide methods to convert
the represented numeric value to byte
, double
,
float
, int
, long
, and
short
.
Constructor Summary | |
---|---|
Number() |
Method Summary | |
---|---|
byte |
Returns the value of the specified number as a byte .
|
abstract double |
Returns the value of the specified number as a double .
|
abstract float |
Returns the value of the specified number as a float .
|
abstract int |
intValue() Returns the value of the specified number as an int .
|
abstract long |
Returns the value of the specified number as a long .
|
short |
Returns the value of the specified number as a short .
|
Methods inherited from class java.lang.Object |
---|
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait |
Constructor Detail |
---|
public Number()
Method Detail |
---|
public byte byteValue()
byte
.
This may involve rounding or truncation.
byte
.public abstract double doubleValue()
double
.
This may involve rounding.
double
.public abstract float floatValue()
float
.
This may involve rounding.
float
.public abstract int intValue()
int
.
This may involve rounding or truncation.
int
.public abstract long longValue()
long
.
This may involve rounding or truncation.
long
.public short shortValue()
short
.
This may involve rounding or truncation.
short
.
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